After an exhaustive amount of research, and reading hundreds of contractor and product reviews on the web, I took four bids, all from very reputable (reviews and the BBB) local companies.

Went with Colorado Window Source because they offered the most innovative, cost-effective and high quality solution, by a wide margin.

My sales rep, Mark Hayden was out three different times with his lead installer, Bret, and satisfied all of my concerns and answered all of my questions (and as a window neophyte, I had many of both). Very precise bid, very precise measurements, and an excellent, trouble-free (and mostly dust-free) install! Could not have been happier with the lead installers, Bret and Steve, as they took very good care of my house, my pet, and my family while they were in our home. Nice to have a contractor show up when he says he's going to, and do the job he promised!

We love our new Sunrise vinyl casement windows, and I would highly recommend Colorado Window Source. Save yourself some frustration, time, and money, and go with these guys!